Internet Services allows us to access huge amount of information such as text, graphics, sound and software over the internet. Following diagram shows the four different categories of Internet Services.
subject gateways contain web resources that have been evaluated and quality checked by subject experts. Below are some subject gateways you might find useful.
The Internet became a major medium in the information world. It offers access to massive
amount of information resources but the fact remains that it is still very hard for people to locate
high quality information among the general chaos.
In the past few years the issue of resource discovery on the Internet has been the focus of much
work by many different communities. Subject Gateways provide links to information resources
(documents, collections, sites or services), predominantly accessible via the Internet.
A means of connecting a computer to any other computer anywhere in the world via dedicated routers and servers. When two computers are connected over the Internet, they can send and receive all kinds of information such as text, graphics, voice, video, and computer programs.
No one owns Internet, although several organizations the world over collaborate in its functioning and development. The high-speed, fiber-optic cables (called backbones) through which the bulk of the Internet data travels are owned by telephone companies in their respective countries.
History of the Internet
The Internet grew out of the Advanced Research Projects Agency's Wide Area Network (then called ARPANET) established by the US Department Of Defense in 1960s for collaboration in military research among business and government laboratories.
Later universities and other US institutions connected to it. This resulted in ARPANET growing beyond everyone's expectations and acquiring the name 'Internet.'
The development of hypertext based technology (called World Wide web, WWW, or just the Web) provided means of displaying text, graphics, and animations, and easy search and navigation tools that triggered Internet's explosive worldwide growth.
